2D10

Crystal structure of the Radixin FERM domain complexed with the NHERF-1 C-terminal tail peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 

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This is version 1.2 of the entry. See complete history. 


Literature

Structural basis for NHERF recognition by ERM proteins

Terawaki, S., Maesaki, R., Hakoshima, T.

(2006) Structure 14: 777-789

  • DOI: 10.1016/j.str.2006.01.015
  • Primary Citation of Related Structures:  
    2D10, 2D11

  • PubMed Abstract: 

    • The Na+/H+ exchanger regulatory factor (NHERF) is a key adaptor protein involved in the anchoring of ion channels and receptors to the actin cytoskeleton through binding to ERM (ezrin/radixin/moesin) proteins. NHERF binds the FERM domain of ERM proteins, although NHERF has no signature Motif-1 sequence for FERM binding found in adhesion molecules ...

    The Na+/H+ exchanger regulatory factor (NHERF) is a key adaptor protein involved in the anchoring of ion channels and receptors to the actin cytoskeleton through binding to ERM (ezrin/radixin/moesin) proteins. NHERF binds the FERM domain of ERM proteins, although NHERF has no signature Motif-1 sequence for FERM binding found in adhesion molecules. The crystal structures of the radixin FERM domain complexed with the NHERF-1 and NHERF-2 C-terminal peptides revealed a peptide binding site of the FERM domain specific for the 13 residue motif MDWxxxxx(L/I)Fxx(L/F) (Motif-2), which is distinct from Motif-1. This Motif-2 forms an amphipathic alpha helix for hydrophobic docking to subdomain C of the FERM domain. This docking causes induced-fit conformational changes in subdomain C and affects binding to adhesion molecule peptides, while the two binding sites are not overlapped. Our studies provide structural paradigms for versatile ERM linkages between membrane proteins and the cytoskeleton.

    Related Citations: 
    • Crystallographic characterization of the radixin FERM domain bound to the C-terminal region of the human Na+/H+-exchanger regulatory factor (NHERF)
      Terawaki, S., Maesaki, R., Okada, K., Hakoshima, T.
      (2003) Acta Crystallogr D Biol Crystallogr 59: 177
    • Structural basis of the membrane-targeting and unmasking mechanisms of the radixin FERM domain
      Hamada, K., Shimizu, T., Matsui, T., Tsukita, S., Hakoshima, T.
      (2000) EMBO J 19: 4449
    • Structural basis of adhesion-molecule recognition by ERM proteins revealed by the crystal structure of the radixin-ICAM-2 complex
      Hamada, K., Shimizu, T., Yonemura, S., Tsukita, S., Tsukita, S., Hakoshima, T.
      (2003) EMBO J 22: 502
    Organizational Affiliation: 

    Structural Biology Laboratory, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RadixinA, B, C, D312Mus musculusMutation(s): 0 
Gene Names: Rdx
UniProt & NIH Common Fund Data Resources
Find proteins for P26043 (Mus musculus)
Explore P26043 
Go to UniProtKB:  P26043
IMPC:  MGI:97887
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP26043
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ezrin-radixin-moesin binding phosphoprotein 50E, F, G, H28N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O14745 (Homo sapiens)
Explore O14745 
Go to UniProtKB:  O14745
PHAROS:  O14745
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14745
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.388α = 90
b = 146.277β = 90
c = 177.763γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-07-18
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance